Wrench attachment



(No Model.)

0. 1-". LAGANKE & T. E. GAWN.

WRENCH ATTACHMENT.

No. 396,751. Patented Jan. 29, 1889.

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CHARLES F. LAGANKE, OF LORAIN, AND THOMAS E. GAWN, OF NORTH Airl- HERST, ASSIGNORS TO THE LORAIN \VRENOll' COMPANY, OF LORAIN, OllIO.

WRENCH ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 396,751, dated January 29, 1889.

Application filed August 27, 1888. Serial No. 283,841. (No model.)

To all whom it may concern:

Be itknown that we, CHARLES E. LAGANKE, a citizen of the United States, residing at Lorain, county of Lorain, and State of Ohio, and THOMAS E. irAVVN,&Gll)lZG11 ot' the United States, residin at North Amherst, county of Lorain, and State of Ohio, have invented certai 11 new and usef ulv lmpro vem en ts in M onk ey- ,Vrench Attacl'lment-s; and we do hereby declare the following to be a descri i tion of the same, and of the manner of constructing and using the invention, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it appertains to construct and use the same; reference being had to the accompanying drawings, fol-min a part of the specilicatiomthe principle of the invention l'reingherein explained and the best mode in which we have contemplated 2o applying that principle, so to distinguish it from other inventions.

The object of our invention is to provide a form of, detachaljile pipe-wrench attachment that may be easily attached to and removed from a monkey-wrench, and that will have a broad and ample bearing-s11ri'ace in engagem ent with the stat i on ar y j aw,who rel )y rigidity and firmness will be insured. V

Referring to the drawings, Figure 1 is a perspective view of the monkey-wrench with the attachment in position. Fig. 2 is a view of the attachment as secured in position, the wrench being sectioned on the dotted line of Fig. 1 and in the direction indicated by the arrow. Fig. 3 is a detail perspective view of the attachment. m

A is the hollow stock of the wrench, provided with the slot (1, having the opposite shoulder-walls (1 B B are respectively the fixed and movable jaws of the wrench, motion being imparted to said movable jaw by means of. the knob Z), that is rigid with a screw that engages with said movable jaw and works in said hollow stock. The inner walls of said hollow stock adjacent to the slot form the shoulders c.

D is a detachable pipe-wrench grip, preferably formed from cast-steel, said attachment having the milled working-face d, the smooth 5o reverse bearing-face (Z, and the side flanges, c,

on either side of said smooth face and. equal in length therewith. Said pipe wrench attachment D has two side flanges, e, and has a longitudinal lug formed with neck f and the two lateral shoulders f, the base or the attachment having bearing on said walls c, the lug-n eck being formed in a transverse plane between said attaelnnent-base and the lugshoulders f,locking under the wall-shoulders c, the thickness of said entire lug and also the width of the lug-neck being slightly less than the width oi said slot, the length oi said slot being greater than the width of said entire lug.

The operation is as follows: The attachment is turned with its narrow edge parallel with the slot, and the lug is then inserted in the slot. The attaclnnent is given a quarter-turn, so that the shoulders f engage with the shoulders c and lock the attachment against outward movement. Said attachment is then moved upward until its smooth face engages with the working-face of the stz'rtionary jaw, and the ears 6 engage with the lateral side faces of said jaw, thus [furnishing a broad surface of engagement between the attachment and the stationary jaw.

The foregoing description and accompanying drawings set forth in detail mechanism in embodiment of our invention. Change may be made therein provided the principles of construction respectively recited in the following claims are employed.

\Ve therefore particularly point out and distinctly claim as our invention 1. The combination, with a wrench provided with a slot, (1, adjacent to a jaw, B, and having side walls, a, formed with inner shoulders c, of apipe-wrench attachment, D,.having a longitudinal lug formed with a neck, f, and two lateral shoulders, f, the base of the at taclunent having bearing on said walls a, the ln g-n eck j being formed between said attach- 1n ent-l'iase and the lug-shouldersj, and fitting between said walls a, said lug-shoulders f locking behind said wall-shoulders c, the thickness of said entire lug and also the width of the lug-neck being slightly less than the width of said slot, the length of said slot being greater than the width of said entire lug, substantially as set forth.

2. The combination, with a wrench provided with a slot, at, adj aeent to a jaw, B, and having the two side Walls, a, formed with inn er shoulders, 0, in same transverse plane with said Walls, of a pipe-Wrench attachment, D, pro 'ided with the two side flanges, P, and l1aV- ing a longitudinal lug formed with the neck f and the two lateral shoulders f, the base of the attachment having bearing on said i Walls a, the lug-neck being formed in a transverse plane between said attaehinentbase i and the lug-shoulders f, and fitting between I l said walls a, the lug-shoulders f locking under the Wall-shoulders c, the thickness of In testimony that We claim the foregoing to be our invention We have hereunto set our 20 hands this 24th day of August, A. D. 1888.

CHARLES F. LAGANKE. THOMAS E. GAWN, Witnesses:

FRANK HOGAN, OTIS E. YOUNG. 

